these 4 derivations will be built:
  /nix/store/2l1mzyc5fj3fg7ngf0cz1gpyyp5l5k9l-Cargo.toml.drv
  /nix/store/p8qbvxp6kv16kx0r7f7vxvc5827f0mvx-source.drv
  /nix/store/fwar50nid0q44886a6m68s20a98qi2gq-harmonia-deps-3.2.0.drv
  /nix/store/4bi9dlmzc9l7vgxsyy4j46dwkisf3clc-harmonia-llvm-cov-3.2.0.drv
error: Cannot build '/nix/store/4bi9dlmzc9l7vgxsyy4j46dwkisf3clc-harmonia-llvm-cov-3.2.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/cv1y6dfwknrjd3bnplpid7gm4lr8rxy4-harmonia-llvm-cov-3.2.0
       Last 25 log lines:
       >         FAIL [   2.287s] (2186/2375) harmonia-store-gc::integration gc_keeps_temp_root_not_yet_in_db
       >         FAIL [   2.284s] (2187/2375) harmonia-store-gc::integration gc_scans_roots_despite_unfollowable_indirect_target
       >         FAIL [   2.303s] (2188/2375) harmonia-store-gc::integration gc_deletes_readonly_paths
       >         FAIL [   2.366s] (2190/2375) harmonia-store-gc::integration gc_keeps_unknown_path_registered_after_snapshot
       >         FAIL [   2.372s] (2191/2375) harmonia-store-gc::integration gc_removes_unknown_disk_entries
       >         FAIL [   2.383s] (2192/2375) harmonia-store-gc::integration gc_skips_locked_tmp_dir
       >         FAIL [   2.523s] (2193/2375) harmonia-store-gc::integration gc_deletes_non_utf8_store_entry
       >         FAIL [   2.519s] (2194/2375) harmonia-store-gc::integration gc_keeps_deriver_of_alive_path
       >         FAIL [   2.547s] (2195/2375) harmonia-store-gc::integration gc_deletes_drv_when_output_deriver_is_unset
       >         FAIL [   2.547s] (2196/2375) harmonia-store-gc::integration gc_keeps_transitive_closure
       >         FAIL [   2.567s] (2197/2375) harmonia-store-gc::integration gc_removes_dangling_auto_root
       >         FAIL [   2.586s] (2198/2375) harmonia-store-gc::integration gc_removes_stale_temp_roots_file
       >         FAIL [   2.689s] (2199/2375) harmonia-store-gc::integration gc_deletes_unreferenced_paths
       >         FAIL [   2.689s] (2200/2375) harmonia-store-gc::integration gc_keeps_ca_deriver_via_deriver_field_not_build_trace
       >         FAIL [   2.804s] (2201/2375) harmonia-store-gc::integration gc_keeps_ca_output_via_build_trace
       >         FAIL [   2.963s] (2202/2375) harmonia-store-gc::integration gc_keeps_ca_outputs_of_alive_drv
       >         FAIL [   3.233s] (2204/2375) harmonia-store-gc::integration gc_removes_reserved_space_file_and_creates_private_lock
       >         FAIL [   3.413s] (2206/2375) harmonia-store-gc::integration gc_drops_partial_temp_root
       >         FAIL [   3.464s] (2207/2375) harmonia-store-gc::integration gc_keeps_lock_file_of_active_build
       >         FAIL [   3.613s] (2210/2375) harmonia-store-gc::integration gc_keeps_runtime_roots_from_open_fd
       >         FAIL [   3.796s] (2211/2375) harmonia-store-gc::integration gc_runtime_roots_validated_against_db
       >         FAIL [   4.290s] (2215/2375) harmonia-store-gc::integration gc_ignores_invalid_store_basenames
       >         FAIL [   4.470s] (2217/2375) harmonia-store-gc::integration gc_handles_self_references
       > warning: 152/2375 tests were not run due to test failure (run with --no-fail-fast to run all tests, or run with --max-fail)
       > error: test run failed
       For full logs, run:
         nix log /nix/store/4bi9dlmzc9l7vgxsyy4j46dwkisf3clc-harmonia-llvm-cov-3.2.0.drv